If you are trying to be a positive proponent of greek (and Panhellenic) life, don't you think it would be a good idea to use the current and accepted terminology?

It is "recruitment" not rush. You are a "New Member", not a pledge. Using this outdated nomenclature lends to the readers' association with fraternitys and hazing. All NPC groups have policies that address and forbid hazing.
You refer to "house" throughout your article, but the majority of campuses don't have residential housing. The correct term would be "chapter".

You mention becoming a sister, once initiated. In all groups you should be considered a sister at the time you make your committement to that group in a formal pledging or committment ceremony. Segragating NMs from initiated members is a great recipe for other problems, such as hazing.

Your commentary on the religious aspect of initiation ceremonies is interesting. I know many women in your organization, and I don't think there has been a "change in purpose". Our organizations are founded on a belief system that still holds today, regardless of the religious implications. While it is true, that it is not intended to make the initiate feel uncomfortable, to say that many have changed their purpose is an unfounded statement.

Thank you for getting the message out that full participation in all available activities within your group and campus is the best way to come away with a positive experience. With committment to one's group, campus and community everybody wins.